package com.ithuang.websocket.config;

import org.json.JSONObject;
import com.ithuang.websocket.dao.Mes;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import javax.websocket.*;
import javax.websocket.server.PathParam;
import javax.websocket.server.ServerEndpoint;
import java.io.IOException;
import java.util.concurrent.ConcurrentHashMap;


@ServerEndpoint("/websocket/{userId}")
@Component
@Slf4j
public class WebSocketServer {
//   Te te=new Te();


    public  static  Mes mes;
    @Autowired
    public void setMes(Mes mes){
        WebSocketServer.mes=mes;
    }




    /**静态变量，用来记录当前在线连接数。应该把它设计成线程安全的。*/
    private static int onlineCount = 0;
    /**concurrent包的线程安全Set，用来存放每个客户端对应的MyWebSocket对象。*/
    private static ConcurrentHashMap<String,WebSocketServer> webSocketMap = new ConcurrentHashMap<>();
    /**与某个客户端的连接会话，需要通过它来给客户端发送数据*/
    private Session session;
    /**接收userId*/
    private String userId="";

    private String history="";


    /**
     * 连接建立成功调用的方法*/
    @OnOpen
    public void onOpen(Session session, @PathParam("userId") String userId) {
        this.session = session;

        this.userId=userId;






        if(webSocketMap.containsKey(userId)){
            webSocketMap.remove(userId);
            webSocketMap.put(userId,this);
            //加入set中
        }else{
            webSocketMap.put(userId,this);
            //加入set中
            addOnlineCount();
            //在线数加1
            try {
                sendMessage(history);
            } catch (IOException e) {
                throw new RuntimeException(e);
            }
        }

        log.info("用户连接:"+userId+",当前在线人数为:" + getOnlineCount());

//        try {
////            sendMessage("连接成功");
//
//        } catch (IOException e) {
//            log.error("用户:"+userId+",网络异常!!!!!!");
//        }
    }

    /**
     * 连接关闭调用的方法
     */
    @OnClose
    public void onClose() {

        if(webSocketMap.containsKey(userId)){
            webSocketMap.remove(userId);
            //从set中删除
            subOnlineCount();
        }
        log.info("用户退出:"+userId+",当前在线人数为:" + getOnlineCount());
    }

    /**
     * 收到客户端消息后调用的方法
     *
     * @param messages 客户端发送过来的消息*/
    @OnMessage
    public void onMessage(String messages, Session session) {
        log.info("用户消息:"+userId+",报文:"+messages);
        messages=messages.trim();
//        try {
//           this.history = mes.getMessage().toString();
//            sendAllMessage(userId+":"+message
////                    this.history
//                    );
//        } catch (IOException e) {
//            throw new RuntimeException(e);
//        }
        //可以群发消息
        //消息保存到数据库、redis
        if(StringUtils.isNotBlank(messages)){
            try {
                //解析发送的报文
//                JSONObject jsonObject = JSON.parseObject(message);
//                this.message="姓名"+userId+","+"消息"+message;
//                Message message= new Message();
//                message.setToName(userId);
//                message.setMessage();
                log.info(messages+"wsmessagggggggggggggggggggggggggggggggggggg");
                JSONObject jsonObject = new JSONObject(messages);
//                ChatVo chatVo = JSON.parseObject(jsonData, ChatVo.class)
//                saveMessageServiceImp saveMessage=new saveMessageServiceImp();
//                saveMessage.saveMessage(messages);

                sendAllMessage(messages);
            }catch (Exception e){
                e.printStackTrace();
            }
        }
    }

    /**
     *
     * @param session
     * @param error
     */
    @OnError
    public void onError(Session session, Throwable error) {
        log.error("用户错误:"+this.userId+",原因:"+error.getMessage());
    }

    /**
     * 实现服务器主动推送
     */
    public void sendMessage(String message) throws IOException {
        this.session.getBasicRemote().sendText(message);
    }


    /**
     * 实现服务器主动推送
     */
    public void sendAllMessage(String message) throws IOException {
        ConcurrentHashMap.KeySetView<String, WebSocketServer> userIds = webSocketMap.keySet();
        for (String userId : userIds) {
            WebSocketServer webSocketServer = webSocketMap.get(userId);
            webSocketServer.session.getBasicRemote().sendText(message);
         log.info("run..............................");
        }
    }

    /**
     * 发送自定义消息
     * */
    public static void sendInfo(String message,@PathParam("userId") String userId) throws IOException {
        log.info("发送消息到:"+userId+"，报文:"+message);
        if(StringUtils.isNotBlank(userId)&&webSocketMap.containsKey(userId)){
            webSocketMap.get(userId).sendMessage(message);
        }else{
            log.error("用户"+userId+",不在线！");
        }
    }

    public static synchronized int getOnlineCount() {
        return onlineCount;
    }

    public static synchronized void addOnlineCount() {
        WebSocketServer.onlineCount++;
    }

    public static synchronized void subOnlineCount() {
        WebSocketServer.onlineCount--;
    }
}

